Turn over and over (4)
I believe the answer is:
roll
'turn over and over' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for roll that I've seen before include "Move like a ball" , "Throw (a die or dice)" , "Bread - list - sway" , "See 7" , "Cylinder (of paper etc)" .)